Cable gripping device



Jan. 30, 1934. M. LANDAHL CABLE GRIPPING DEVICE 2 Sheets-Sheet l Filed Jan. 1

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Patented Jan. 30, 1934 UNITED STATES CABLE GRIPPIN G DEVICE Magnus Landahl, San Francisco, Calif.

Application January 16,

2 Claims.

This invention relates to improvements in cable gripping devices and has particular reference to a device for taking hold of a cableor a similar round object in such a manner that a tight hold will be maintained thereon, thus enabling a person to pull the cable or rod through the gripping action of my device.

The principal object of the invention is to provide a device which will grip cables of various s1zes.

A further object is to produce a device which will firmly grip the cable without injuring the same.

A further object is to produce a device which may be readily released from the cable when desired.

A further object is to provide means whereby the-gripping elements will be actuated in unison.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a side elevation of my same would appear in use,

Fig. 2 is an enlarged cross sectional view on the line 2-2 of Fig. 1,

Fig. 3 is a perspective view of one of the gripping jaws,

Fig. 4 is a top plan view of one of the gripping aws,

Fig. 5 is a top plan view of one set of the gripping jaws,

Fig. 6 is a side elevation of Fig. 4,

Fig. '7 is a top plan view of my device showing the same in open position, and

Fig. 8 is an end elevation partly in cross section, upon an enlarged scale and taken on the line 88 of Fig. 1.

There are many times when it is necessary to grip cable which may be in the form of a wire, rope, an electric cable, telephone cable, submarine cable or the like, so as to haul the cable to any desired point. It is essential that a device for gripping the cable should be strong and one which will grip cables of various sizes and also to provide means whereby the cable may be released quickly and without injury to the cable. Applicant has devised a cable gripping device which has all these features.

In the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates one half of a casting and the numeral 6 the device as the 1933. Serial No. 652,042

other half. These castings are hinged together as at '7 through the medium of a pintle 8. In order to lock the two halves together, I form upon the casting 6, a pair of ears 9 and upon the casting 5 I hinge as at 11, a lever 12 having a T-head 13, which T-head is adapted to underlie and engage the lugs 9 (see Figs. 1 and 8). An arm 14 is attached to the casting 5 and serves as a means whereby the device may be anchored, as for instance, by a rope 16. The interior of the castings 5 and 6 are each provided with dove-tail slots 1'7. As the interior of these castings are tapered, the effect will be that these dove-tail slots will tend to converge relative to each other toward the smaller end of the taper.

Referring now to Fig. 4 I have shown one of the grippers 18 which may be referred to as a master gripper, which has end plates 19 and 21. These and plates extend beyond the side margin of the gripper so as to overlie the ends of the grippers 22 and 23. The grippers just described may be considered as being positioned in the casting 6. A similar set of grippers are mounted in the casting 5. Dowel pins 24 extend between the grippers 22 and 23 of the opposite sets, which dowels cause all of the cable grippers to move in unison. A chain 26 is connected to the end plate 19 of one of the gripper sets, the purpose of which will be later seen.

Assuming now that it is desired to use my device, the two castings are swung to open position as shown in Fig. 7 and the grippers are positioned adjacent the large or flaring ends of the castings. for instance, the casting 6 and the casting 7 is moved upon its hinge so as to enclose the cable. This act will cause the dowel pins 24 to connect the two sets of grippers, with the result that by pulling upon the chain 26 all of the grippers will move in unison toward the smaller end of the castings. As this occurs all the grippers will move into more intimate contact with the cable, it is of course understood that the lever 12 has locked The cable to be gripped is now laid in,

the two sections of the casting together and conshape and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of the sub-joined claims.

Having thus described my invention, I claim: 1. In a device of the character described, a pair of castings hinged one to the other, one of said castings having lugs formed thereon, the other of said castings having a lever pivoted thereto, a T- portion formed on said lever and capable of engaging said lugs, diverging dove-tail slots formed in each of said castings, a master gripper carried by each of said castings and slidable in one of said dove-tail slots in each of said castings, end plates carried by said master grippers, grippers slidably mounted in other of said dove-tail slots, said end halves of said split member one to the other.

MAGN'US LANDAHL. 

